Riot Platforms is trading 4.21% higher at $14.35 in pre-market, with broader risk-on support but no clear company-specific trigger identified. - Shares closed at $13.77 on October 20. - Bitcoin and Ethereum are up 1.08% and 1.31%, respectively, since the prior close; those gains may support sentiment toward a Bitcoin miner but do not establish the cause. - Riot’s October 20 announcement scheduled its Q3 earnings call for November 4; it did not report results or new guidance.